Malicious PDF — malware analysis report

Static analysis result for SHA-256 47edb0cc1784b8f4…

MALICIOUS

PDF

88.9 KB Created: 2021-08-15 21:41:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: a7fd3f8464ede0ca09994ce3084b0d49 SHA-1: b85154311707af54c02f129f7bd22f54b09bac22 SHA-256: 47edb0cc1784b8f472a924034e71157bed81f5aab75cbe363e171826bba0003c
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, containing numerous external URIs that point to various websites, some of which are hosted on compromised CMS uploads or disposable domains. The primary purpose appears to be directing users to potentially malicious content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://irlanc.ru/uplcv?utm_term=kits+del+bayern+munich+2021+para+dream+league+soccer+2020 PDF link annotation
    • http://sspvjd.com/FileData/ckfinder/files/20210719_8756A9258318F86D.pdfIn PDF document text
    • http://merwepizza.com/upload/file/26910304854.pdfIn PDF document text
    • https://snabavto.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606fb96be83e8---sivujuves.pdfIn PDF document text
    • http://stitesattorney.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/pitidadu.pdfIn PDF document text
    • http://eko-inwest.eu/upload/file/mipiwetevuvubiwozewajutud.pdfIn PDF document text
    • https://traveletrust.com/basefile/traveletrustcom/files/bisomagolutujovi.pdfIn PDF document text
    • https://study-go.info/wp-content/plugins/super-forms/uploads/php/files/7478a3a9fce77984280d97867ef03d29/pafepazoxasigiderivepem.pdfIn PDF document text
    • http://chromatographvials.com/d/files/wovuvabidatevaked.pdfIn PDF document text
    • http://lltsg.com/uploadfile/file///2021060514590354.pdfIn PDF document text
    • http://deckdreams.com/clients/3/34/34055ef41782f8f15ebf372c1e39ecad/File/18111559970.pdfIn PDF document text
    • http://pferdefreunde-brueckenhof.de/sites/default/files/userfiles/file/moluseruvekapelese.pdfIn PDF document text
    • http://sh8ke.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ffc2f55f69---nuzuwika.pdfIn PDF document text
    • https://atamergranit.com/userfiles/file/97847854770.pdfIn PDF document text
    • http://www.almansori-ye.com/almansorifiles/files/javurelizodajebokopo.pdfIn PDF document text
    • http://lroundup.com/clients/d/d7/d7466da0ad72d96b64793f89c518a0d9/File/pawuworaxulupigatepe.pdfIn PDF document text
    • http://beergolfers.com/blog/images/file/10853592487.pdfIn PDF document text
    • https://ailani.org/wp-content/plugins/super-forms/uploads/php/files/73587f8169042e8bd843b80241d0fe40/34300540120.pdfIn PDF document text
    • http://aarogyamedico.com/userfiles/file/50010893935.pdfIn PDF document text
    • http://banphimchuot.com/userfiles/file/xipeforuvaponuwoxusisize.pdfIn PDF document text
    • http://www.lebedosapartotel.com/data/yukle/files/92836779460.pdfIn PDF document text
    • https://www.officinadelgustoroma.com/wp-content/plugins/super-forms/uploads/php/files/28754026a49d1fdce3be3d88b2b1d840/bubaxekakerutux.pdfIn PDF document text
    • http://berries85.com/clients/4/4c/4c86f126b1006e50d570d35f0f20b0f3/File/20547630371.pdfIn PDF document text
    • https://nationalcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608e82d459fea---79689557460.pdfIn PDF document text
    • http://svs-pm.com/wp-content/plugins/formcraft/file-upload/server/content/files/160926fd422047---41766518442.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e916.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE916 24132 bytes
SHA-256: 0f200d84a25724b11d794408e234640b7edcb90fa4f71d7e252b74450c63e6dd
font_01_sfnt_off00012080.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12080 11600 bytes
SHA-256: 52c9905a9cebcdbd867e114a5336c267473a3f5321f86497f07fa0d7c39ac05c
font_02_sfnt_off00013b88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13B88 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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